Erlangen 2026 – scientific programme

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T: Fachverband Teilchenphysik

T 33: Silicon Detectors IV

T 33.7: Talk

Tuesday, March 17, 2026, 17:45–18:00, KH 01.022

Verification of a cell isolation test for loaded cells of the ATLAS ITk Pixel detector — •Nico Klein, Klaus Desch, Matthias Hamer, Florian Hinterkeuser, Alexandra Wald, and Dominik Hauner — Physikalisches Institut, Universität Bonn, Deutschland

The high luminosity upgrade for the Large Hadron Collider at CERN requires a complete redesign of the current tracking detector of the ATLAS experiment. The new Inner Tracker, the ITk Detector, will consist of a silicon pixel detector and a silicon strip detector. The ITk Pixel Detector is divided into three subsystems, the Outer Barrel (OB), Outer Endcaps and Inner System. In the OB, modules are loaded on thermally conductive bare module cells (now called loaded cells) before they are mounted on the local supports (so-called longerons and half-rings). The serial powering scheme of the ITk Pixel Detector requires a good electrical isolation of the readout ASICs from the (grounded) local support structures. For the loaded cells a test was developed to verify this isolation and the results obtained, using pre-production cells, are shown in this presentation.

Keywords: Pixel; ITk; ATLAS; Cell Integration; Cell Loading